netcdf fails to index

[neverpanic (Clemens Lang)]

When I try to generate PortIndex, I see:

Failed to parse file science/netcdf/Portfile: grep: /opt/local/lib/libhdf5.settings: No such file or directory

Please ensure the Portfile does execute correctly without the file /opt/local/lib/libhdf5.settings present (e.g. by wrapping the call to grep with a catch statement). If you want to change the default variants and/or throw an error depending on whether a certain variant is present in a dependent port, you can use the active_variants PortGroup (see source:trunk/dports/_resources/port1.0/group/active_variants-1.1.tcl​, which has some documentation).

[tenomoto (Takeshi Enomoto)]

Thank you for pointing this out. I didn't pay enough attention to what happens if hdf5-18 is not installed. Now the grep is called if netcdf4 variant (default), which defines the dependency to hdf5-18, is set.

[ryandesign (Ryan Carsten Schmidt)]

Not enough:

$ port info netcdf +netcdf4
Error: Unable to open port: grep: /opt/local/lib/libhdf5.settings: No such file or directory

You cannot be sure that the dependency has been installed by that time. You should use the active_variants 1.1 portgroup as already discussed in greater detail on the mailing list.

[tenomoto (Takeshi Enomoto)]

I wrapped the call to grep with active_variants command.

if {[variant_isset netcdf4]} {
    if {[active_variants hdf5-18 hdf5-18 ""]} {
        set hdf5cc [exec grep "C Compiler" ${prefix}/lib/libhdf5.settings | awk {BEGIN{FS="/"}{print $NF}}]
 ....
    }
}

I get the following error with hdf5-18 deactivated and issue

$ port info netcdf +netcdf4
Error: Unable to open port: Registry error: hdf5-18 not registered as installed & active.

Is this the expected error?

[tenomoto (Takeshi Enomoto)]

I used catch as in the example. Committed in r108320.